| 摘要 |
An applicator system, for use in delivering a flowable composition, comprising a container (12) including an inner collapsible layer distinct from an outer deformable layer, the inner collapsible layer (24) defining a reservoir, and the outer deformable layer (10) being separated from the inner collapsible layer by a buffer zone (32); a dispenser (72) including a first passageway (54, 84) distinct from a second passageway, the first passageway being in communication with the buffer zone and the second passageway (86) being in communication with the reservoir (24); and valve means (96, 98) operable to control entry of air into the buffer zone through the first passageway and exit of flowable composition from the reservoir through the second passageway; wherein the valve means is of unitary construction.
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